# Set up a Connection Agreement

Before directory replication can be performed, you must configure a connection agreement to define the type of connection, authentication, and server names. Use Microsoft Management Console to configure connection agreements.

1. On the Start menu, point to Programs, point to Adminstrative Tools, and then click Active Directory Connector Management.
2. In the console tree, click Active Directory Connector
.
3. On the Action menu, point to New, and then click Connection Agreement to display the Properties dialog box.
4. On the General tab, in Name, type a name for the Connection Agreement. If you use the symbols /,\,+,<,>,&,^,|,[, ] to create a Connection Agreement, they will not appear in the name. For example, a Connection Agreement called CA+[Test] will appear as CA Test because + and [] are illegal characters.
5. Under Replication direction, click one of the following replication directions:

- To perform a two-way replication, click Two-way. During a two-way replication, the Windows directory is first updated with Exchange directory information.
- To update the Windows directory, click From Exchange to Windows.
- To update the Exchange directory, click From Windows to Exchange.

6. Under Active Directory Connector service, click the service to run the Connection Agreement.
7. On the Connections tab, type the Windows 2000 Server name and the Exchange server name in Server. The specified server must be the domain controller containing the schema. Click an authentication option in Authentication. The authentication options are:
   - Windows Challenge/Response
     Enable authentication using Windows network security.
   - Windows Challenge/Response using Secure Sockets Layer (SSL)
     Enable authentication using Windows network security through an SSL-encrypted channel.
   - Basic (Clear Text)
     Enable authentication using an unencrypted user name and password (clear text).
   - Basic (Clear Text) using SSL
     Enable authentication using clear text through an SSL-encrypted channel.

   Note

   In a two-way replication, the specified Exchange and Windows authentication type and credentials must be able to write to and read from both the Exchange directory and the Windows 2000 Server Active Directory. In a one-way replication, the authentication type and credentials must have read access to the export directory where the information is replicated from, and write access to the import directory where the information is replicated to.
8. To specify the account name to be used for this replication, click Modify to display the Connect as dialog box. In Connect as, type the account name in the form appropriate for the type of authentication you specified. The appropriate formats are shown in the following table. Then, in Password, type the password. Click OK.

Authentication Type | Account Name Form
--- | ---
Windows Challenge/Response | <domain name>\<account name> for example: Redmond\gladysl
Basic (Clear Text) | CN=<account name>,OU=<organizational unit>, DC=<domain> for example: CN=gladysl,OU=Admin,OU=Exchange,DC=Microsoft,DC=Com

Note When replicating from Exchange you must include the domain name regardless of the authentication type.
9. On the Connections tab, under Port, you can type an alternative Lightweight Directory Access Protocol (LDAP) port number for the Exchange directory.

Note To verify the port number currently being used by the Exchange directory, use the Exchange Server Administrator program to check the Port number setting on the General tab of the LDAP (Directory) Settings object. It is located in the organization name/site name/Configuration/Servers/server name/Protocols container.

10. On the Deletion tab, click a method for deleting items during replication.

    When you replicate deletions from a Windows 2000 Server Active Directory to an Exchange directory, select one of the following:

    - Delete the Exchange mailbox
      Click this option to delete from the Exchange directory any user account deleted in the Windows directory.
    - Keep the Exchange mailbox and store the deletion list in the temporary CSV file
      Click this option to store the list of deleted items in a common comma-separated value (CSV) formatted file. Information is appended to this file as replication occurs. The log file is located in %SystemRoot%\System32\MSADC\<Connection Agreement name>\ex55.csv. No checking or maintenance is performed on the LocalToRemote directory, therefore you must ensure that adequate disk space is available for the file. If the file is no longer needed, you can remove it to increase the amount of space available on the disk.

    When you replicate deletions from an Exchange directory to the Windows 2000 Server Active Directory, select one of the following:

    - Delete the Windows account
      Click this option to delete from the Windows directory any user account deleted in the Exchange directory.
    - Keep the Windows account and store the deletion list in the temporary LDF file
      Click this option to store the deletions performed in Exchange as a list of deletions in an LDF formatted file. Information will be appended to this file as replication occurs. The log file is located in %SystemRoot%\System32\MSADC\<Connection Agreement name>\Win2000.ldf. No checking or maintenance is performed on the <Connection Agreement name> directory, therefore you must ensure that adequate disk space is available for the file. If the file is no longer needed, you can remove it to increase the amount of space available on the disk.
    Note
    To review the deletions list, open the log file in Notepad, or, for .csv applications you can use a spreadsheet application.

    To update the Windows 2000 Service Active Directory with the deletions recorded in the log file, use the LDIF Directory Synchronization Bulk Import/Export tool (Ldifde.exe) found in the &SystemRoot%\System32 directory.

Before you can specify the Exchange recipient containers to use when updating the Windows 2000 Server Active Directory, you must configure your connection agreement to replicate from Exchange to Windows. For help configuring your connection agreement, see Replicating from Exchange to Windows.

Before you can specify the Windows 2000 Server Active Directory organizational units to use when updating the Exchange directory, you must configure your connection agreement to replicate from Windows to Exchange. For help configuring your connection agreement, see Replicating from Windows to Exchange.

To set up a replication schedule to perform automatic replication at regular intervals, see Set up a Replication Schedule.

### Related Topics

Understanding Secure Authentication

Replicate from Exchange to Windows

Replicate from Windows to Exchange

Set a Default Policy for Replication

Set Advanced Options

Set up a Replication Schedule